| Central Park (Altrincham) Management Company Limited | Households | 2003 |
| Central Power Holdings Limited | Financial services | 2021 |
| Central Power Limited | Construction | 2004 |
| Central Regeneration Limited Partnership | | 2003 |
| Centre GH Ltd | Wholesale & retail | 2018 |
| Centurion Site Services Limited | Transport & logistics | 2000 |
| Century Park (2003) Management Company Limited | Real estate | 2002 |
| Cerebrum Technology Limited | Professional & scientific | 2023 |
| Cerebrumai Limited | Information & communication | 2024 |
| Ceres Engineering Ltd | Professional & scientific | 2024 |
| Cereza Advisors Ltd | Professional & scientific | 2021 |
| Cerulean C Limited | Administrative & support | 2012 |
| Cerys Tattoo Ltd | Other services | 2026 |
| Ceylon Tusker UK Limited | Arts & recreation | 2023 |
| CF Engineering Ltd | Professional & scientific | 2025 |
| CF7 Ltd | Professional & scientific | 2024 |
| CFI Agents Limited | Arts & recreation | 2025 |
| CFP Civils Ltd | Construction | 2020 |
| CFX Analysis Limited | Administrative & support | 2014 |
| CG Company Debt Solutions Limited | Professional & scientific | 2017 |
| CG Cyber Intelligence Limited | Information & communication | 2026 |
| CG Excel Limited | Professional & scientific | 2025 |
| CH Tax Advisory Ltd | Professional & scientific | 2015 |
| Chabad Lubavitch | Other services | 2008 |
| Chad Thompson Consultancy Ltd | Professional & scientific | 2022 |
| Chadtex Limited | Manufacturing | 2006 |
| Chadwick Textiles Limited | Wholesale & retail | 2006 |
| Chaipoint Keighley Ltd | Hospitality | 2020 |
| Chalet Shop Limited | Wholesale & retail | 2013 |
| Chalkboard Properties Limited | Real estate | 2014 |
| Challenger Glass Ltd | Manufacturing | 2013 |
| Challenger Law Limited | Professional & scientific | 2021 |
| Challinor Building Services Limited | Construction | 2011 |
| Chamberlains SGS Holdings Limited | Professional & scientific | 2012 |
| Chambers Capital Construction Limited | Construction | 2021 |
| Chambers Capital Developments Ltd | Construction | 2026 |
| Chambers Capital Group Holdings Limited | Construction | 2021 |
| Chambers Capital Group Ltd | Construction | 2018 |
| Chambers Capital Homes Ltd | Construction | 2026 |
| Chambers Capital SPV1 Limited | Real estate | 2023 |
| Chambers Management Professional Services Ltd | Information & communication | 2023 |
| Chameleon Purchasing and Technical Services Ltd | Professional & scientific | 2013 |
| Champagne Hill Limited | Administrative & support | 2005 |
| Champs Camp Limited | Extraterritorial | 2023 |
| Champs Camp UK Limited | Extraterritorial | 2024 |
| Chandler Bing Project Management Services Ltd. | Professional & scientific | 2013 |
| Chandler Jones International Limited | Administrative & support | 2010 |
| Chandlers Grande Brasserie Ltd | Hospitality | 2002 |
| Change and Delivery Dynamics Limited | Administrative & support | 2026 |
| Change NOW Services Ltd | Information & communication | 2022 |
| Changing Education Limited | Education | 2008 |
| Chantel Health Limited | Health & social care | 2023 |
| Chantlings Ltd | Arts & recreation | 2026 |
| Chapman Renovations Ltd | Real estate | 2018 |
| Chappell & Matthews Limited | Professional & scientific | 2002 |
| Chapter BVC Limited | Real estate | 2024 |
| Chapter Real Estate Limited | Real estate | 2024 |
| Chapter WBL Limited | Real estate | 2025 |
| Character Cottage Holidays Limited | Administrative & support | 2005 |
| Charcoal Investments Limited | Professional & scientific | 2013 |
| Charcoal Investments US Ltd | Professional & scientific | 2015 |
| Chariot Estate Agents & Lettings Limited | Real estate | 2011 |
| Chariot Financial Consultancy Limited | Professional & scientific | 2015 |
| Charles Layfield Limited | Professional & scientific | 2017 |
| Charles Topham & Sons Trading LLP | | 2007 |
| Charlestown Eyecare Limited | Health & social care | 2024 |
| Charlie Moose Media Ltd | Information & communication | 2018 |
| Charlotte Hayward Coaching Ltd | Other services | 2024 |
| Charlotte Wood Podiatry Limited | Health & social care | 2013 |
| Charlrew Limited | Extraterritorial | 2009 |
| Charlton Developments Limited | Construction | 1988 |
| Charlton Mills Advisory Ltd | Professional & scientific | 2022 |
| Charmed Health Ltd | Health & social care | 2018 |
| Charminar Hospitality Ltd | Hospitality | 2026 |
| Charvin James Limited | Wholesale & retail | 2013 |
| Charybdis Engineering Limited | Professional & scientific | 2024 |
| Chase William Properties Limited | Real estate | 2021 |
| Chasing Drawings Limited | Professional & scientific | 2023 |
| CHC Consultants Ltd | Professional & scientific | 2024 |
| CHD Group Limited | Real estate | 2009 |
| Chedleigh Court Residents Company Limited | Households | 2002 |
| Cheeky Promotions Limited | Information & communication | 2011 |
| Cheesman Associates Limited | Professional & scientific | 2002 |
| Cheetham & Mortimer Ltd | Real estate | 2021 |
| Cheetham Family Investment Company Limited | Financial services | 2023 |
| Cheetham Holdings Limited | Financial services | 2023 |
| Cheiron Energy Limited | Mining & quarrying | 2010 |
| Cheiron OIL & GAS Limited | Mining & quarrying | 2021 |
| Cheiron S ABU Sennan Limited | Mining & quarrying | 2021 |
| Cheiron SE Horus Limited | Mining & quarrying | 2021 |
| Cheiron W EL Fayum Limited | Mining & quarrying | 2021 |
| Cheiron WD Exploration Limited | Mining & quarrying | 2021 |
| Cheiros Limited | Health & social care | 2017 |
| Chelaine Ltd | Professional & scientific | 2019 |
| Chelleon Distribution Ltd | Wholesale & retail | 2002 |
| Chelsea House Management Company Limited | Households | 2000 |
| Cheltenham Family Health Care Centre Limited | Extraterritorial | 1997 |
| Cheltenham Orthodontics Limited | Health & social care | 2008 |
| Chemical Engineering Services Limited | Administrative & support | 2007 |
| Chen Zhenglei Ltd | Arts & recreation | 2017 |